If you have a Google Adwords account, you have access to the Website Optimizer tool that is a very nifty application to get a great idea of the Conversion Rate Optimization (CRO). PPC campaigns nowadays do not come cheap and the crucial factor is to keep track of the conversion rate of your sales funnel.

The actual conversion process involves testing a landing page leading to a signup or filling in of a form or a thankyou page in the event of a successful sale of a product. With Website Optimizer, you can set up experiments that involve Multivariate testing or A/B testing to track which version of the landing page is pulling in the desired results.